Most questioned is commonly understood as a phrase that refers to an object, idea, or individual that has raised the highest amount of inquiries or doubts. Some antonyms, or opposites, for this phrase could include terms like "least disputed," "undisputed," "unquestionable," "unambiguous," "uncontested," or "unarguable." These words all convey the opposite idea of something that is firmly established, clear, and without controversy. It is important to consider these antonyms carefully in any context to ensure that they accurately convey the intended meaning of a particular sentence or idea. In this way, selecting the most appropriate antonym can help to clarify and strengthen one's writing.